It was sunny this afternoon. Mum and I go to the park which is near my home to a walk. When we were walking, I saw the little girl. She was eating a banana.After she finished eating them, she threw the banana skin on the ground into the park. I walk over to pick it up and told her it was wrong do so. If all of us do like that, the park will become dirtier. Then we can't enjoy by ourselves in it. All of us should do something to make our environment clean but beautiful.